Figure C-1 Measurement Setup - Keysight Technologies E4417A Service Manual

CF is the value of the Calibration Factor of the Thermistor mount at 50 MHz.
M
which is equal to:
M s
where,
P
s
coefficient of the 8478B detector.
Hence,
P meas
Consider the measurement setup that exists in
Figure C-1
P
o
is reflected back towards the source. The power subjected on the Keysight 432
would be:
P o 1 P d
But because a proportion of this total power related to P
will again cause a reflection giving:
P o 1 P s P d
Keysight E4416A/E4417A Power Meters Service Guide
Measurement Uncertainty Analysis - Power Reference Level Test
is the mismatch magnitude between the DUT reference and the 8478B sensor,
s
= 2 P s P d
⋅ ⋅
is the reflection coefficient of the source (i.e. the DUT) and P
= f V comp V 1 V 0 R CF M s
(
DUT
Measurement Setup
is the total power output from the DUT. Of this power a proportion related to P
) 2
(
–
2
( ± )
, , , , ,
P
s
8478B
P
d
d
)
Table C-1
432A
Power Meter
has been reflected Ps
d
C
is the reflection
d
149